Hopefully, the calorific breakfast is eaten well in advance of playing.

'They'd need to eat a good two or three hours before they go on the pitch,' Ms Warr said.

'They want to be getting up and eating your breakfast straight away, not waiting until 10am, because their blood sugar levels will be really low by that point. So I'm presuming they're eating before that anyway.'

There is one potential plus point from having a Full English though. While the beans provide a form of carbohydrates for energy, they also lead to something else entirely.

'Beans aren't the best carbs,' Ms Warr said. 'I don't want to be rude but they'll probably still have flatulence. They'll be putting the other team off that's for sure. Maybe that's there tactic!'

An healthier alternative is to use a cleaner form of protein, such as eggs, and to eat whole grain toast for carbs.

Ms Warr added: 'If they are having really good, organic, homemade sausages, and if they're grilled rather than fried, that's an okay option. If the bacon was unsmoked and again grilled, and had the fat cut off it, that would be better.

'Because they are burning off a lot of energy, obviously they are not trying to lose weight. But they do still need to stay in really good shape in order to be performing well on the pitch.

'I'd give them smoothies made form bananas, natural yoghurt, water, loads of berries, some ground almonds. Put that in a blender and that would give them loads of vitamins and nutrients in and provide good energy.

'Or they could have grilled tomatoes, eggs – poached, scrambled or boiled – they are really could source of protein, and leaner. A couple of slices of whole grain toast as well for carbohydrates so they can sprint around on the pitch.

'Ideally they want slow releasing carbohydrates for breakfast. But because matches aren't that long, they could have the whiter variety of pasta or bread about and hour before because they're going to burn it off. It will give them that short burst. They're not running a marathon.'

Perri Shakes-Drayton has revealed she is fully fit for this weekend's Aviva Birmingham Grand Prix after an injury derailed her Olympic medal hopes earlier this month.

The 23-year-old missed out on a place in the 400 metre hurdles final after she finished third in her semi-final heat but confirmed the hamstring problem she suffered at the Games is behind her, albeit still something of a mystery.

'I tried my best to make it feel better but in my mind I knew it didn't feel right.

Missing out: Shakes-Drayton did not qualify for the Olympic final

Back in action: The Londoner will compete in Birmingham

'The opportunity of being at the Olympics, I'm not going to pull out. I was hoping I was going to pull though.

'Like a lot of people have said, I didn't look like the same athlete that people noticed in the heat.

'It was tightness, only tightness. I had a scan to find out if was serious and the scan didn't show anything of concern, it was just tightness, so general soft tissue physio sorted it out.'

Shakes-Drayton admitted it was not the first time she had experienced that type of problem.

She said: 'I have experienced it before, back in Rome where I never even raced because of a similar thing.

'Me and my coach are looking to meet up and discuss it because we don't want this kind of problem to happen again.

'Maybe it will be something that needs to be dealt with before winter training starts.'

However, the London-born athlete is hoping to finish with a strong result in the UK's final Samsung Diamond League meet of the year this weekend and replicate her personal best of 53.78 seconds at Crystal Palace last month.

'I'm hoping to end on a high. That's my aim,' she said.

'I'm going to go out there and try to win but these girls are top girls and I'm just hoping to go out there and do my thing and repeat what I did in Crystal Palace.

Fine form: Shakes-Drayton recorded a personal best last month

'I feel 100 per cent fit. I feel good. With my event you can't really judge what's going to happen so I've just got to go out there and try and stay in contention.'

With the London Olympics over, Shakes-Drayton has been left to reflect on what could have been, but she claims she is not setting her sights on the Rio 2016 Games just yet.

'I would have run a much better semi-final [at the Olympics] because the heat was so comfortable, I felt so good, I knew I had so much more left to give.

'I was more than capable of making that final but it just didn't happen.

'Rio is a goal but I've got loads more championships in between that.

'We've got World Championships in Moscow and when I go there I'm looking to be a medal contender.